Tube Specifications
Listed below are the essential characteristics of popular tubes for amateur radio.
POPULAR TRIODES
for Rull Ratings
Volts / Amps / Plate Diss.
kW / Pg. W / Eb, kV / Ib, A / Eb, kV / Ib, IA / Po, kW / Gain dB
8873 / 6.3 / 3.0 / 240 / 0.2 / 5 / 2.2 / 0.4 / 2.0 / 0.3 / 0.3 / 15.3 / 500
3CX400A7 / 8874 / 6.3 / 3.0 / 240 / 0.4 / 5 / 2.2 / 0.4 / 2.0 / 0.3 / 0.3 / 15.3 / 500
3CX800A7 / 13.5 / 1.5 / 200 / 0.8 / 4 / 2.3 / 0.6 / 2.2 / 0.5 / 0.8 / 15.1 / 350
3CPX800A7 / 13.5 / 1.5 / 200 / 0.8 / 4 / 3.5 / 0.6 / 3.2 / 0.4 / 0.9 / 15.9 / 500
3CX1200A7 / 7.5 / 21.0 / 200 / 1.2 / 50 / 5.0 / 0.8 / 3.6 / 0.7 / 1.5 / 12.5 / 110
3CX1200D7 / YU-121 / 6.3 / 25.0 / 200 / 1.2 / 50 / 5.5 / 0.8 / 4.0 / 0.6 / 1.6 / 14.8 / 110
3CX1200D7 / YU-181 / 6.3 / 25.0 / 200 / 1.2 / 50 / 5.5 / 0.8 / 4.0 / 0.6 / 1.6 / 14.8 / 110
YC-236 / 5.0 / 10.5 / 200 / 1.5 / 20 / 4.0 / 1.0 / 4.0 / 0.9 / 2.0 / 16.0 / 250
3CX1000A7 / 8283 / 5.0 / 30.5 / 200 / 1 / 45 / 3.5 / 1.0 / 3.5 / 0.9 / 2.1 / 13.1 / 220
3CX1500A7 / 8877 / 5.0 / 10.5 / 200 / 1.5 / 20 / 4.0 / 1.0 / 3.5 / 1.0 / 2.1 / 15.1 / 250
3CX5000A7 / 10.0 / 17.5 / 200 / 5 / 35 / 6.5 / 2.5 / 6.0 / 1.6 / 5.0 / 14.2 / 110
3CX3000A / 8238 / 7.5 / 51.5 / 5 / 4 / 50 / 6.0 / 2.5 / 5.5 / 1.1 / 5.1 / 14.5 / 110
3CX3000F1 / 8239 / 7.5 / 51.5 / 5 / 4 / 50 / 6.0 / 2.5 / 5.5 / 1.1 / 5.1 / 14.5 / 75
3CX3000A7 / 7.5 / 51.5 / 160 / 4 / 225 / 5.0 / 2.5 / 4.8 / 1.5 / 5.5 / 11.0 / 110
3CX3000F7 / 7.5 / 50.5 / 160 / 4 / 225 / 5.0 / 2.5 / 4.8 / 1.5 / 5.5 / 11.0 / 75
3CX2500F3 / 8251 / 7.5 / 51.5 / 20 / 4 / 150 / 6.0 / 2.5 / 6.0 / 2.1 / 10.0 / 18.7 / 75
3CX6000A7 / YU-148 / 7.0 / 78.0 / 200 / 6 / 225 / 7.0 / 3.5 / 5.7 / 2.5 / 10.0 / 12.2 / 110
3CX10,000A3 / 8159 / 7.5 / 99.0 / 20 / 10 / 250 / 7.0 / 5.0 / 7.0 / 4.0 / 22.4 / 15.3 / 160
3CX10,000A7 / 8160 / 7.5 / 100.0 / 200 / 10 / 500 / 9.0 / 4.0 / 7.6 / 3.7 / 22.5 / 11.7 / 160
3CX15,000A7 / 6.3 / 160.0 / 200 / 15 / 500 / 10.0 / 5.0 / 7.0 / 4.6 / 25.5 / 9.9 / 110
3CX20,000A7 / 6.3 / 160.0 / 200 / 20 / 500 / 10.0 / 5.0 / 7.8 / 4.2 / 27.5 / 10.8 / 110
3-500Z / 5.0 / 14.6 / 130 / 0.5 / 20 / 4.0 / 0.4 / 3.0 / 0.4 / 0.74 / 14.0 / 110
3-1000Z / 7.5 / 20.0 / 200 / 1 / 50 / 6.0 / 0.7 / 6.0 / 0.7 / 3.2 / 13.2 / 110
811A / 6.3 / 4.0 / 60 watts / 8 / 1.5 / 0.175 / 1.5 / 0.16 / 0.16 / 13.0 / 30
572B / 6.3 / 4.0 / 170 / 160 watts / 50 / 2.7 / 0.275 / 2.4 / 0.25 / 0.30 / 7.5 / 30
TETRODES
for Full Ratings
F1, MHz
Volts / Amps / Plate Diss.
kW / Pg.1, W / Pg.2, W / Eb, kV / Ib, A / Eb, kV / Ib, IA / Po, kW / Gain dB
8122 / 13.5 / 1.3 / 0.4 / – / 8 / 2.2 / 0.3 / 2.0 / 0.3 / 0.4 / – / 500
8930 / 6.0 / 2.6 / 0.4 / 2 / 12 / 2.4 / 0.3 / 2.0 / 0.3 / 0.4 / 21.0 / 500
4CX250B / 7203 / 6.0 / 2.6 / 0.3 / 2 / 12 / 2.0 / 0.3 / 2.0 / 0.3 / 0.4 / 21.3 / 500
4CX250BC / 8957 / 6.0 / 2.4 / 0.3 / 2 / 12 / 2.0 / 0.3 / 2.0 / 0.3 / 0.4 / 21.3 / 500
4CX250FG / 8621 / 26.5 / 0.5 / 0.3 / 2 / 12 / 2.0 / 0.3 / 2.0 / 0.3 / 0.4 / 21.3 / 500
4CX250R / 7580W / 6.0 / 2.6 / 0.3 / 2 / 12 / 2.0 / 0.3 / 2.0 / 0.3 / 0.4 / 21.3 / 500
4CX300A / 8167 / 6.0 / 2.9 / 0.3 / 2 / 12 / 2.0 / 0.3 / 2.0 / 0.3 / 0.4 / 21.3 / 500
4CX350A / 8321 / 6.0 / 2.9 / 0.4 / 0 / 8 / 2.5 / 0.3 / 2.2 / 0.3 / 0.4 / 20.5 / 110
4CX350AC / 8321A / 6.0 / 2.9 / 0.4 / 0 / 8 / 2.5 / 0.3 / 2.2 / 0.3 / 0.4 / 20.5 / 110
4CX350F / 8322 / 26.5 / 0.7 / 0.4 / 0 / 8 / 2.5 / 0.3 / 2.2 / 0.3 / 0.4 / 20.5 / 110
4CX350FJ / 8904 / 26.5 / 0.7 / 0.4 / 0 / 8 / 2.5 / 0.3 / 2.2 / 0.3 / 0.4 / 20.5 / 110
4CX150A / 7034 / 6.0 / 2.6 / 0.3 / 2 / 12 / 2.0 / 0.3 / 2.0 / 0.3 / 0.4 / 21.3 / 150
8560AS / 6.3 / 2.6 / 0.3 / 2 / 12 / 2.0 / 0.3 / 2.0 / 0.3 / 0.4 / 21.3 / 500
4CX300Y / 8561 / 6.0 / 3.5 / 0.4 / 1 / 8 / 2.0 / 0.4 / 2.0 / 0.4 / 0.6 / 21.9 / 110
4CX400A / 6.3 / 3.2 / 0.4 / – / – / 2.5 / 0.4 / 2.5 / 0.27 / 0.4 / – / 500
4CX600JB / 6.0 / 5.4 / 0.6 / 1 / 15 / 3.0 / 0.6 / 2.8 / 0.6 / 1.0 / 20.0 / 30
4CX800A / GU-74B / 12.6 / 3.6 / 0.8 / 2.5 / 0.8 / 3.2 / 0.63 / 0.8 / 150
GU-84B / 4CX2500E / 27.0 / 3.7 / 2.5 / 1 / 30 / 2.2 / 2.0 / 2.0 / 1.25 / 1.5 / – / 75
4CX800A / GU74B / 12.6 / 3.6 / 0.8 / – / – / 2.5 / 0.8 / 3.2 / 0.63 / 0.8 / – / 150
4CX1500B / 8660 / 6.0 / 10.0 / 1.5 / 1 / 12 / 3.0 / 0.9 / 2.9 / 0.7 / 1.1 / 28.6 / 110
4CX1000A / 8168 / 6.0 / 9.0 / 1.0 / 1 / 12 / 3.0 / 1.0 / 3.0 / 0.9 / 1.6 / 20.0 / 110
4CX1500A / 5.0 / 38.5 / 1.5 / 25 / 75 / 5.0 / 1.0 / 4.0 / 0.8 / 2.5 / 28.4 / 150
4CX1600B / 12.6 / 4.4 / 1.6 / – / – / 3.3 / 1.4 / 2.4 / 0.87 / 2.1 / – / 250
4CX3000A / 8169 / 9.0 / 41.5 / 3.5 / 50 / 175 / 7.0 / 2.0 / 6.0 / 1.5 / 7.1 / 23.1 / 150
4CX3500A / 5.0 / 90.0 / 3.5 / 50 / 165 / 5.5 / 2.0 / 5.0 / 1.3 / 5.3 / 23.2 / 220
4CX5000A / 8170 / 7.5 / 75.0 / 5.0 / 75 / 250 / 7.5 / 3.0 / 7.0 / 2.2 / 12.5 / 20.7 / 110
4CX5000R / 8170W / 7.5 / 75.0 / 5.0 / 75 / 250 / 7.5 / 3.0 / 7.0 / 2.2 / 12.5 / 20.7 / 110
4CX7500A / 7.0 / 110.0 / 7.5 / 50 / 165 / 7.5 / 3.0 / 7.0 / 2.4 / 13.0 / 20.1 / 220
4CX10,000D / 8171 / 7.5 / 75.0 / 10.0 / 75 / 250 / 7.5 / 3.0 / 7.5 / 2.8 / 16.0 / 20.3 / 110
4CX12,000A / 8989 / 6.5 / 120.0 / 12.0 / 150 / 300 / 10.0 / 3.5 / 10.0 / 2.8 / 22.5 / 19.1 / 220
4CX20,000A / 8990 / 10.0 / 140.0 / 20.0 / 200 / 450 / 10.0 / 5.0 / 9.0 / 4.1 / 28.8 / 19.5 / 110
4CX15,000A / 8281 / 6.3 / 160.0 / 15.0 / 200 / 450 / 10.0 / 6.0 / 10.0 / 4.6 / 36.5 / 22.2 / 110
9010 / YC-130 / 7.5 / 160.0 / 18.0 / 200 / 450 / 10.0 / 5.0 / 10.0 / 4.6 / 36.5 / 22.2 / 110
4-250A / 5.0 / 14.5 / .25 / 10 / 35 / 4.0 / 0.35 / 3.0 / 0.31 / 1.0 / – / 110
4-400A / 5.0 / 14.7 / .4 / 10 / 35 / 4.0 / 0.35 / 3.0 / 0.35 / 1.1 / – / 110
4-1000A / 7.5 / 21.3 / 1.0 / 25 / 75 / 6.0 / 0.7 / 6.0 / 0.7 / 3.4 / – / 110
Characteristics listed on this page are approximate, and for comparison only. The user should consult manufacturers data for detailed operating parameters to fit the application. RF Parts Company is not responsible for errors.